Pump



Dec. 13,1927. 1,652,317

J. A. MORGAN PUMP Filed July 30. 1923 s Sheets-Sheet s I N VEN TOR.

A TTORNE Y.

4 is an elevation of the supporting disc;

Patented Dec. 13, 1927. v UNITED STATES 1,652,317 PATENT OFFICE.-

J'OHN A. MORGAN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO THE JOHN A. MORGAN MACHINERY COMPANY, OF LOS ANGELES, CALIFORNIA.

ruiur.

Application filed July 30,

This invention relates to means for transmitting power to or from a fluid and the mechanism involving the features of my invention is adapted to serve as a pump or as a turbine or for other purposes. For simplicity of description, however, the device is described as a pump, but I wish it to be understood that it-is equally well adapted to serve as a turbine or in other capacities.

The general object of the invention is to provide a simple and effective means for regulating a rotary pump of such construction that a maximum of efficiency will be obtained.

A specific object of this invention is to provide means whereby a rotary device may be made to serve as a pump or as a turbine without rearranging any of the parts.

An additional object of the invention is toprovide a rotary pump, having a rotating member carrying circumferentially and radially moving pistons, with means so that the time and the amount of throw of the pistons toward and from the inner wall of the casing of the pump may be adjusted.

A further object of the invention is to provide an improved means for positioning and adjusting the eccentric straps of a rotary pump.

Anot er object of the invention is to provide an improved means for lubricating the working parts of a rotary pump.

Other objects of the invention will be apparent from the following description taken in connection with the accompanying drawings wherein Fig; 1 is a vertical sectional view partly in elevation showing a pump embodying the features of my invention; Fig. 2 is a section on line 22, Fig. 4; Fig. 3 is a section on line 33, Fig. 1;

1g. 5 is a view similar to Fig. 4 showin the means for shifting the eccentric and l ig. 6 is a section on line 6-6, Fig. 2.

Referring to the drawing by reference characters, I have shown a casing at 10. This casing comprises a cylindrical member 11 having a closure 12 and 14 secured at each end thereof. Mounted to rotate within the casing 10, I show a pair of rings 16 and 17 These rings are secured together to rotate'as a unit and between them I mount the rotary elements constituting the pum The ring 17 is fixed to rotate with a sha 20. This shaft is shown as passing through 1923. SeriaLNo. 654,762.

a boss 21 on the closure 14 and may be provided with the packing gland 22 as shown. Suitable anti-friction members 24 may be provided for the shaft 20. Secured to the shaft 20, I show a second shaft 30. This shaft is indicated as secured to the shaft by a threaded portion 31.

The shaft may be supported at its other end by ananti-friction member which may be enclosed in a suitable ca 36. From the foregoing description, it wi be obvious that when the shaft 20is rotating, the rings 16 and 17 rotate with it.

Mounted eccentrically upon the shaft 30, Ishow. an eccentric 40. This eccentric is indicated as having one end 41 inserted with- 1n a recess in a plate 42. The plate 42 in turn is fitted in a recess 43 in the cover 12 of the casing.

The eccentric which is shown in section in 1g. 6, comprises a member substantially cylindrical in form having end closures 41 and 44. The body of this eccentric is preferably composed of a plurality of members 45, the outer surfaces 45 of which are curved upon the same radius. The longitudinally extending portion 46 of the eccentric (see Fig. 6) is provided with an aperture through which the shaft 30 extends.

Mounted upon the eccentric 40 I show a second eccentric 50. This eccentric is referably constructed as a hollow cylin rical member having closed ends 50 and 50 which are apertured to receive the smaller eccentric 40. The eccentric 50 is arranged to rotate u on the eccentric 40.

In or er to provide lubrication for eccentrics, I provide a passageway 50 which communicates with a grease cup .50 From the foregoing description itwill be apparent these that the lubricant inserted through the pasfor causing movement of shaft 52 associated therewith upon which I From the foregoing description it will be mount the movable pistons or impellers 53.

The opposed faces of each abutment and the corresponding faces of each impeller are curved on the same radius so that a close fit is secured between them. The outer face 56 of the abutments and the inner face 57 of each impeller is curved on a radius corresponding substantially to the radius of the inner surface 58 of the casing member 11.

In order to cause the impellers to move toward and from the wall of the casing, I provide a connecting link 62 for each impeller. Each of the connecting links is pivotally connected with an impeller and is provided with an eccentric strap 63 shown as tted over the eccentric 50. Apertures 64 and 65 in the wall of the eccentric 50 serve to provide a channel to lubricate the strap 63 from the supply of lubricant in the eccentric.

In order to secure the eccentric straps 63 upon the eccentric 50 I show a flanged ring 66 mounted u on one end of the eccentric. This ring is s own as comprisin a flanged I ortion against; which the end eccentric ars, and a circular portion shown as fitting in a rabbet in the eccentric 50. Adjacent the other end of the eccentric50, I show a ring 67 which is mounted for adjustable movement lengthwise of the eccentric 50 and may be held in adjusted position by means of suitable fastening member 67 The casing is provided with an inlet 66 and with an outlet 67 and with channels 68 and 69 in the inner wall of the casing, leading respectively to the inlet and the outlet. Upon rotation of the shaft 20' the rings 16 and 17 rotate carrying the pistons and abutments therewith and since the axis of rotation of the eccentric 50 is eccentric to the axis of the rotating rings the istons move toward and from the wall 0 the casing drawing water into the pump through the inlet and discharging it through the outlet.

In order to adjust the throw of the im pellers I show a gear 70 secured to the end 50" of the eccentric 50. This gear may be secured by means of screws 71 or in any other desired manner. The gear 70 meshes with a second gear 72 shown as mounted on a shaft 73 which may be secured to the disc 42. A third gear 74 meshes with the gear 72 and this gear likewise may be secured on a shaft 75 secured to the disc 42. Another gear 76 is mounted on the shaft 77, secured to the disc 42.

The shaft 77 is adapted to rotate and is provided at the end opposite the gear 76 with a bevel gear 80. This bevel gear meshes with a corres onding ear 81 shown as mounted on a. sha 82 whic is journaled in brackets 83 on the disc 42. An operating wheel 85 may be provided for the purpose of rotating the shaft 82.

apparent that upon operating the wheel 85 the train of gears 76, 75, 72 and 70 will be set in motion thereby rotating the eccentric 50 upon the eccentric 40 and consequently the throw of the propellers will be adjusted.

It is desirable to provide some means for indicating the adjustment of the eccentric 50 and in order to do this I show a gear 90 meshing with the gear 72 and having a shaft 91 mounted on the disc 42. The shaft 91 extends through the disc 42 and is provided upon the outer surface of the disc with an indicating hand 92. A scale 93 maiyl be provided upon the disc 42 to indicate t e degree of adjustment.

The pump shown is so constructed that by rotating the eccentric 50 the action of the pump is reversed so that the structure becomes a turbine. To provide suitable means for limiting this rotary movement of the eccentric 50, I show a stop plate 100 secured by a suitable fastening member 101 to the periphery of the eccentric 50. The stop plate projects beyond th'e'periphery of the eccentric 50 and is adapted to engage with a stop member 102 which may be secured to the disc 42. The eccentric 50 is adapted to travel in an anti-clockwise direction from the position shown'in Fig. 4 and in order to limit its movement I show a second stop member 103.

\Vhen the stop 100 engages the in 102 as shown in Fig. 4 the device descri ed is arranged to function as a ump. When the device is rotated so that t e stop 100 is adjacent the stop 103 the device functions as a turbine. Various arrangements intermediate these positions can be obtained b rotating the handle 85 and the amount 0 throw of the pistons can be easily adjusted to either reverse the action or to adjust it properly. The relative arrangement of the eocentric can be determined by referring to the indicator 92. i

From the foregoing description it will be apparent that whenever the operator wishes to change the throw of the impellers he may rotate the wheel 85 and the adjustment efi'ected can be read on the indicator scale 93.

Having thus described my invention, I claim: j

1. In a rotary device, a casing, a rotary member within the casing having a plurality of impellers mounted for rotary movement thereon, a support in said casing, an eccentrio rotatable about said support, said eccentric having a hollow tubular side wall and, closed ends to provide a hollow receptacle,

links connecting said eccentric with each impeller and means whereby lubricant contained in said eccentric may serve to lubrioate the bearing surface between said link and said eccentric.

2. In a pump, a hollow casing, a rotary to change the eccentricity.

member within the casing having impellers thereon movable toward and from the casing, said casin having end closure plates, a recess in one 0 said closure plates, a disc in said recess, an eccentric mounted on said disc, a second eccentric rotatablymounted on and eccentric to said first eccentric, connections between said second eccentric and said impellers, a gear mounted on said-second eccentric, 'asecond gear mounted on one of said closure plates and meshing with the first mentioned gear and means to operate said gears 3. 'In a pump, a hollow casing, a rotary member within the casing having-impellers thereon movable toward and from the case ing, said casing ha end closure plates, a recess in one of said c osure plates, adisc in said recess, an eccentric mountedon said disc, a second eccentric rotatably mounted on said first eccentric, connections between said second eccentric and said impellers, 'a gear mounted on one of said eccentrics, a second operate said gears to gear mounted on said plate and meshing with the first mentioned gear and means to change the eccentricity.

4. A rotary device including a hollow cas ing having an inlet and an outlet, a rotatable member" in said casing, radially movable impellers-carried by said member, a drive shaft, a'second shaft, an eccentric on said second shaft and eccentric to said second. shaft, means connectingsaid eccentric and, said impellers, said second 'shaft being mounted eccentrical ly on the drive shaft means to rotate said eccentric about sai second shaft, means to limit the rotation of said eccentric, and means whereby when the eccentric is at one limit of its movement the device functions as a pump andwhe'n at the other limit of its movement the device functions'as a turbine.

5. A rotary device including a casing and a rotatable member, radially movable impellers carried by said member, a drive shaft, a stabilizing shaft engaging said drive shaft, an eccentric on said stab1lizing shaft and eccentric thereto, a second eccentric on said first eccentric and eccentric to said first eccentric and links connecting the second eccentric with the impellers.

6. A rotary pump including a casing, a

rotary member within the casing having a plurality of radially movable impellers movably mounted thereon, a pair of eccentrics, one mounted upon the other, a third shaft supporting the inner eccentric each of said eccentrics being eccentricto the third shaft and to each other, connecting links between one of said eccentrics and said impellers for alternately .moving said impellers toward and from the casing, a gear on one of said eccentrics and means coacting with said'gear for shifting said one eccentric to change the eccentricity.

In testlmony whereof, I hereunto aflix my signature. v 1

' J OHN A. MORGAN. 

